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189950-17-2

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189950-17-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189950-17-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,9,5 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 189950-17:
(8*1)+(7*8)+(6*9)+(5*9)+(4*5)+(3*0)+(2*1)+(1*7)=192
192 % 10 = 2
So 189950-17-2 is a valid CAS Registry Number.

189950-17-2Relevant articles and documents

Synthesis and monoamine transporter affinity of front bridged tricyclic 3β-(4′-halo or 4′-methyl)phenyltropanes bearing methylene or carbomethoxymethylene on the bridge to the 2β-position

Zeng, Fanxing,Jarkas, Nachwa,Owens, Michael J.,Kilts, Clinton D.,Nemeroff, Charles B.,Goodman, Mark M.

, p. 4661 - 4663 (2007/10/03)

A series of front bridged tricyclic 3β-(4′-halo or 4′-methyl)phenyltropanes bearing methylene or carbomethoxymethylene on the bridge to the 2β-position was synthesized, and their binding affinities were determined in cells transfected to express human nor

Synthesis and biological evaluation of a series of novel N- or O-fluoroalkyl derivatives of tropane: Potential positron emission tomography (PET) imaging agents for the dopamine transporter

Gu, Xiao-Hui,Zong, Rushi,Kula, Nora S.,Baldessarini, Ross J.,Neumeyer, John L.

, p. 3049 - 3053 (2007/10/03)

A series of novel fluoroalkyl-containing tropane derivatives was synthesized, and their binding affinities for the dopamine transporter (DAT), serotonin transporter (SERT), and norepinephrine transporter (NET) were determined via competitive binding assays. Among these derivatives, the fluoropropyl ester of β-CIT (19), the fluoroethyl ester of β-CIT (20), the N-fluoropropyl derivative of β-CBT (12), and the fluoropropyl ester of β-CMT (18) displayed higher affinity and greater selectivity for the DAT versus SERT and NET than FP-CIT, which indicates that they are attractive candidates for the development of 18F-labeled PET imaging agents for the DAT.

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